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redhat change hostname, ip address

原创 Linux操作系统 作者:Orasource 时间:2012-03-27 16:26:31 0 删除 编辑
转自: https://access.redhat.com/knowledge/articles/8645

How do I change the IP address/netmask and hostname on the command line WITHOUT rebooting the machine?

Here are some example configuration files:

/etc/hosts

127.0.0.1      localhost.localdomain  localhost
192.168.0.254  server1.example.com    server1

/etc/sysconfig/network

NETWORKING=yes
HOSTNAME=server1.example.com
GATEWAY=192.168.0.1

/etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0
BOOTPROTO=static
IPADDR=192.168.0.254
NETMASK=255.255.255.0
NBOOT=yes

If you change these values (see example below), you can restart networking without rebooting using the command(s):

# service network restart
# hostname server1.example.com

If you are in the Gnome or KDE user interface, you must also restart it with the commands:

# init 3
# init 5

No reboot is required.

For example, if you needed to change 'server1' to 'webserver1', you can modify the following aspects in the files mentioned above (then follow the other instructions):

  • the Fully Qualified Domain Name and the Alias in /etc/hosts

  • change the HOSTNAME= line in /etc/sysconfig/network

/etc/hosts

127.0.0.1      localhost.localdomain  localhost
192.168.0.254  webserver1.example.com    webserver1

/etc/sysconfig/network

NETWORKING=yes
HOSTNAME=webserver1.example.com
GATEWAY=192.168.0.1



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